[PATCH] Trivial patch for msbusmouse.c

johnpol@2ka.mipt.ru: Re: Trivial patch for msbusmouse.c:
  > On Tue, Mar 19, 2002 at 03:22:58PM +1100, Rusty Russell wrote:
  > > Hi Russell,
  > >
  > > 	Please check this request_region() cleanup patch from Evgeniy
  > > Polyakov against 2.4 and 2.5.
  >
  > Both patches look fine, apart from the disgusting formatting being
  > different from the rest of the files.

  As you wish...

  > --
  > Russell King (rmk@arm.linux.org.uk)                The developer of
  > ARM Linux
  > http://www.arm.linux.org.uk/personal/aboutme.html


  	Evgeniy Polyakov ( s0mbre )

drivers/char/msbusmouse.c

@@ -149,11 +149,15 @@ static int __init ms_bus_mouse_init(void)
 	}
 	if (present == 0)
 		return -EIO;
+	if (!request_region(MS_MSE_CONTROL_PORT, 0x04, "MS Busmouse"))
+		return -EIO;
+	
 	MS_MSE_INT_OFF();
-	request_region(MS_MSE_CONTROL_PORT, 0x04, "MS Busmouse");
 	msedev = register_busmouse(&msbusmouse);
-	if (msedev < 0)
+	if (msedev < 0) {
 		printk(KERN_WARNING "Unable to register msbusmouse driver.\n");
+		release_region(MS_MSE_CONTROL_PORT, 0x04);
+	}
 	else
 		printk(KERN_INFO "Microsoft BusMouse detected and installed.\n");
 	return msedev < 0 ? msedev : 0;